Type-writing machine.



E. L. WAGNER.

TYPE WRITING HLGHINE.

uruouzol rmm nu 2s, nos.

947,873. Patented Feb. 1, 1910.

UNITED STATES PATENT OFFICE.

HERMAN L. WAGNER, 0F MOUNT VERNON, NEW YORK, ASSIGNOR TO UNDERWOOD TYPEWRITER COMPANY, 0F NEW YORK, N. Y., A CORPORATION 0F NEW JERSEY.

TYPE-WRITING MACHIN E.

Speocation o! Letters Patent.

Patented Feb. 1, 1910.

Application led Kay 28, 1906. Serial No. 319,089.

To all' 'whom it may concern:

Be it known that I, Hmumn L. WAGNER, a citizen of the United States, residing in Mount Vernon, in the county of Westchester and State of New York, have invented certain new and useful Improvements in TypelVrit-ing Machines= of which the following is n s cication.

This invention relates to the line spacing mechanism of typewriting machines and its object is to make it. convenient to place letters or figures a trifle above or belour the line of writing as when writing accents, fractions, symbols, etc.

My improvements relate to means for effecting rot-ation of the platen either forwardly or backwardly to a predetermined distance less than n line space, so that the device may print below or above the line. The rotation of the platen I effect by mea-ns of the usual hand wheel, and the distance to which the platen is rotated either forwardly or backwardly for the purposes of l presentinvention, is mechanically deternnned by means of a stop device, which f the is conveniently brought into act-ion by the same hand that. turns the hand wheel, but it is normally out of use during the rotation of the platen. After the figures or symbols are written above or below the line, the

platen and line space wheel are returned to initial position by means of the usual spring detent that. engages the line space Wheel.

In the accompanying drawings, Ligure 1 is a side elevation partly in station of the lefthand end of the platen frame etc., of the g well known Underwood front strike typewritino' machine, showing my improvements :ippheil thereto. F 1g. 2 1s a iront elevation 1 ustrntmg the manner of using the 1mprovement. Fig. 3 shows the platen und line g space wheel as rotated backwurdly by means ot' my improvements for n nieilhanicnlly clel termlned distance less than a line space.

bars 2 strike against the. front side of :i platen 3, which hy means of :in axle fl is Jomnnled in n platen frame, 5. Upon the axle nrc fixed n nolched lne. space wheel (l und :l hund wheel 7, the Int-ter :it the extreme llne space Wheel which are formed at line space intervals.

A stop lever 1l is mounted loosely upon the platen axle by means of a vertical slot l2 formed in the lever and fitting over a collar 1?; provided upon the axle; the lever lying faeewise or flat against; the outer face of the line space wheel and confined at. its upper end by means of a vertical ilanpfe 14.- usually formed upon the end of the p aten frame 5. At its lower end the lever is provided with a toot-h 15 which normal] clears the line space wheel, so as not to o struct the movement thereof. Pro- Jeeting from the lever toward the hand wheel 7 1s a finger piece 16 in position to be convenient-ly pressed up by the thumb of the operator and there held during the turniu of the line space wheel 7. By means of sai finger piece, the tooth l5 is lifted into the immedmtely overlying notch of the line space wheel, Fig. 3, thereby lookin the lever to the line space wheel, so that oth may rock together about the laten iuris; the .lsides of the slots 1Q fitting c osely to the col- U on the upper end of the lever is irovide a pin 17 which normally rests in :l notch 18 formed in said flange 14, but which is lifted outof said notch when the level' rises, Fig. 3. After lifting the stop lever, the operator turns the hand Wheel 7 together with the line space wheel and )laten as far as permitted by the pin 17, which engages with either a forward stop l!) or u backward stop 20 formed in Suid llange adjacent to said notch 18; Saiclstops 1E) and Q0 preferably forming the ends of a slot 20a formed in snid flange. These stops.' l!! und il() are so placed us to limit the stroke of the platen in either direction to less [hun n line space.

l-Vheu it is desired to write a trifle above the line of writing, the linger )ieee 1U is I pressed up and the hand n'hee i turned In Sold machine, types 1 mounted on type bncluvnrrlly until the pin 1T eonl'uels with the stop 20, Fig. 3. :nul while. the pulls nre held in this position the type laars :we operulefl lo eileet. the printing, ns seen :ll 2l ou llw Sheet 2&2, Fig. 2. Upon relieving the parts T und 1G from pressure the spring cleend of the nxle. A detent. 8 is pressed by u teni. 8 restores the line space wheel mul lf lhe opelnlnt spring E.' into the notches or teeth 10 of the platen to init-inl position.

desires to write below the line, he rotates the platen in the opposite direction, and operates a type bar to prlnt as at 23, Fig. 2. The usual line space movements of the p aten are effected by means of the usual slide 24 and pawi 25.

Variations may be resorted to within the sco e of the invention.

Iaving thus described my invention, I claim:

1. In a typewrit-ing machine, the combination with a platen and a line space. rack therefor, of a stop device normally idle d ur ing the rotation of the platen but connectible to said line space rack at will to n iove fon wardly and backwardly therewith and means for limiting to less than a single line Space the foiward and backward movements of said stop device and rack when so connected.

2. In a typewriting machine, the combination with a revoluble platen and a. llne space wheel therefor, of a stop lever normali idle during the revolution ofthe platen, an having a toot-h to en ade any of the teethbf said line space w ee and means etlective when the lever is engaged .to the llne space wheel for limiting the stroke of the lever to less than a line space.

3. In a. typewriting machine, the combination with a revoluble platen and a line space wheel therefor, of a stop lever normall f idle during the revolution of the platen, an having a tooth to en age any of the teethpf said line space wleel, and means eficctlve when the lever is engaged to the line space wheel :for limiting the stroke ot the lever to less than a line space either forwardly or backwardly.

4. In a typewriting machine, the combination with a revoluble platen and a line space wheel therefor, of a lever having a loose engagement with an axle or collar of the platen and also having a tooth normally disengaged from the line space wheel, said lever movable upon said collar or axle, so as to bring its tooth into engagement with the line space wheel, and means for limituo the forward and backward stroke of the cvcr when so engaged, to less than a line space in each direction.

5. In a. typeivritin machine, the combination with a rcvolu le platen and a linispace wheel, of a stop device normally idle during the revolution of the platen and having a tooth, a linger piece moving said stop device, so that its tooth will engage thc lino space wheel to cause the wheel and alo i de vico to move together, and means for limiting` the throw of the wheel and stop device to less than a line space.

ln a typowriting machine, the combination with u. platzen and platen frame, ol" an axle. supporting the platen in said frame,

a lever having a ,slot connection with said axle and provided with a linger piece., a tooth upon said lever, the latter movahlc'liv said finger piece, so that the tooth engages said line space wheel to lock the latter to the lever, and stops upon the platen frame to limit the rotation of the lever to less than a line s ace in each direction.

7. n a. typevvritinvr machine, the combination with a revolu leplaten and a line spa-ce wheel, of a frame, an axle wherebyY said platen is mounted upon said frame, a hand wheel uplon said axle, a loosely mounted stop lever aving a finger piece which is arranged between said hand wheel and said line space wheel, a tooth upon said lever liftable by said linger piece into engagement with a bottom notch on the line space wheel, and stops upion the platen frame for limiting the stro e of said lever to less than a line space when so engaged to the line space wheel.

8. In a typewriting machine, the combination with a revoluble platen and a hand Wheel therefor, oi a stop device having a finger piece convenient to said hand wheel, so that the stop device may conveniently be moved from normal to effective esition, and held there conveniently by tie saine hand that manipulates said hand wheel, a tooth upon said stop device movable by said finger piece into engagement with the line space wheel of the platen, and a stop for 11mit1ng the stroke of the platen and said stop device to less than a line space.

9. In a typewriting machine, the combination with a platen having an axle, of a frame in which said axle is j ournaled, said frame com )rising a vertical flanfre, a line space whee secured upon said axila, a hand wheel also secured upon said axle, a lever mounted looselir upon said axle and having at its up er end a pin which lits in a notch in said ange to prevent vibration of the lever, a finger ieee upon said lever beneath said axle and etween the line space wheel and the hand wheel, a tooth upon the lower cod of said lever, the latter movable by said linger piece, so that said tooth engafes the line space wheel and locks the lever thereto, said piu being moved out of the notch by the tooth engaging movement of said lever, and said {langebeiug provided with stops to limit the movement ot' said pin either for- Wardly or baekwardl to less than aline space.

lll. In a typcwrting machine, the combination of a platen, line spacing n'icclmnisni, and means for writing above or below a line. determined by said lnc spacing mechanism, said means comprising a fixed guide with slots therein at right angles to cach other, and n'. hand actuated engaging device work ingr in Suhl slots, the movi-ment ol': thc enfixed guide with slots therein at right angles to i-.wh other and in which -:aid engaging devlce 1s adapted to nuwe, the engaging de gaging device in one slot, carrying the :levice into and ont of operative engagement with the platen and out of and mto said lat mentioned slot and the movement of the n I Q vice being in engagement; wlth said toothed engaging devlee 1n the other slot detemnmwheel when said device is 1n one slot and out mg the extent of rotation which may he x of: engagementwlth the wheel when said del given the platen by said device. il vice is in the other slot.

L. W'AGN ER.

' HER-MAN 11. In a typewrxting machine, the combi- Wtnesses M. S. EYLAR, B. C. STICKNEY.

nation of a platen, a toothed v vheel eqnnected with the platen, an enga uwr device coperatve with sani toothed w lee and a '1 

